1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
USPshnik [31]
3 years ago
11

Please answer the question below and show working out pls

Mathematics
1 answer:
zaharov [31]3 years ago
3 0

9514 1404 393

Answer:

  $28.14

Step-by-step explanation:

The area of a container will be the sum of the base area and the lateral area. The relevant formulas are ...

  A = πr^2 . . . . . . . . area of the circular base with radius r

  A = 2πrh . . . . . . .  area of the side of the container

The sum of the two areas is ...

  Atot = πr^2 +2πrh = πr(r +2h) = π(7/2 cm)(7/2 cm +2·21 cm) = (π/4)(7)(91) cm^2

  Atot = 159.25π cm^2 = 0.015925π m^2 . . . . metal area per container

__

Then 125 containers will have an area of ...

  Aall = (125)(0.015925π m^2) = 1.990625π m^2 ≈ 6.25373 m^2

The price of this amount of sheet metal will be ...

  (6.25373 m^2)($4.50 /m^2) = $28.14 . . . cost of 125 containers

__

<em>Additional comment</em>

1 cm = 0.01 m, so (1 cm)^2 = (0.01 m)^2 = 0.0001 m^2

You might be interested in
25 pts plz help!!!!!!!!!!!
alexdok [17]
Which part needs answering ?
3 0
2 years ago
Read 2 more answers
Help!!!!! What’s the answer
Olegator [25]

D because is the equal to the other side but added allá together

5 0
3 years ago
-5/12-(-9/3) Reduce to simplest form
Lelechka [254]

Answer:

2 7/12

Step-by-step explanation:

−512−−93=?

Since the the second fraction is negative and you are subtracting, remove the negative sign and switch the operation to addition.

The equivalent equation is

−512+93=?

The fractions have unlike denominators. First, find the Least Common Denominator and rewrite the fractions with the common denominator.

LCD(-5/12, 9/3) = 12

Multiply both the numerator and denominator of each fraction by the number that makes its denominator equal the LCD. This is basically multiplying each fraction by 1.

(−5/12×1/1)+(9/3×4/4)=?

Complete the multiplication and the equation becomes

−5/12+36/12=?

The two fractions now have like denominators so you can subtract the numerators.

Then:

−5+36/12=31/12

This fraction cannot be reduced.

The fraction

31/12

is the same as

31÷12

Convert to a mixed number using

long division for 31 ÷ 12 = 2R7, so

31/12=2 7/12

Therefore:

−5/12−−9/3=2 7/12

3 0
4 years ago
Please use an explanation in this!
Licemer1 [7]

Answer:

If the one leaning wasn't leaning it would be the same height.

Step-by-step explanation:

If they are the same height and width (which they are) they have the same volume. Also, leaning shapes have the same volume as not leaning shapes.

Hope this helps you! :)

4 0
3 years ago
F(x)=3x-7 find the value of c so that f(c) =20 is true
Andreas93 [3]

<u>Answer</u>:

c = 9

<u>Explanation</u>:

given: f(x)=3x-7

<em>if f(c) =20</em>

To solve this replace x with c and then y is 20.

<u>Solve</u>:

3c - 7 = 20

3c = 27

c = 27 ÷ 3

c = 9

7 0
2 years ago
Read 2 more answers
Other questions:
  • the price of a tent decreased by 15% and sold for 76.49: what was the origanal price of the tent in dollars
    9·2 answers
  • Can someone help me ASAP please
    11·1 answer
  • PLEASE HELP!!! Trapezoid ABCD was dilated to create trapezoid A'B'C'D'. Which statements are true about the trapezoids? Check al
    9·1 answer
  • i need help with 3 (along with 3a-c) i am confused on what to do with the numbers that are in degrees...
    13·2 answers
  • 297, 252, 207, 162, ?
    6·2 answers
  • HELP!! I NEED THIS ASAP!!!!!
    6·2 answers
  • Help with this one!!!<br><br><br> Show steps pls :)
    15·1 answer
  • What the nearest whole for 80.356 + 46.585
    8·2 answers
  • Katy has 100 quarters and dimes. Their total value is $19. How many of each coin does Katy have?
    5·1 answer
  • A party supply store is selling balloons for $6 per dozen. What is the price per balloon? $​
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!